During this course 2011 - 2012 MATHEMATICS is being taught for 4º ESO.

QUESTION OF THE WEEK

CAN YOU GUESS?...

WHAT'S THE DOMAIN AND RANGE OF THESE FUNCTIONS?

a) y = | x |-1/2

b) y = (-x)-1/2


30 / 5 / 12 INTRODUCTION TO FUNCTIONS


To introduce functions it's very useful to remember some concepts:
To graph functions you can use this link:
But, it´s possible to work with a graphic calculator. There are some of them on line:


19 / 5 / 12 EXAM PREPARATION

¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿

Check older posts related to inequalities and geometry.
Practise exercises
Take notes
Ask your questions

 ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

QUESTION OF THE WEEK

Do you know the angle between two vectors if drawing is not allowed? 
a = (1,1) 
b = (-2,2)

9 / 5 / 12 Analytic geometry

WORKING WITH VECTORS, SOME NEW TERMS ARE NEEDED:  


2 / 5 / 12 MEAN PROPORTIONAL IN A RIGHT TRIANGLE

TO LEARN HOW TO USE THE MEAN PROPORTIONAL IN A RIGHT TRIANGLE:

TO PRACTISE USING IT: